Title :
A wideband speech and audio coding candidate for ITU-T G.711WBE standardization
Author :
Hiwasaki, Yusuke ; Mori, Takeshi ; Sasaki, Shigeaki ; Ohmuro, Hitoshi ; Kataoka, Akitoshi
Author_Institution :
NTT Cyber Space Labs., Musashino
fDate :
March 31 2008-April 4 2008
Abstract :
This paper describes an ITU-T G.711 embedded wideband speech coder, submitted as a candidate to the ITU-T G.711 wideband extension standardization qualification phase. The codec generates a bitstream comprised of three layers: a G.711 core layer with noise shaping, a time-domain weighted vector quantized narrowband enhancement layer, and an MDCT-based higher band enhancement layer. Through subjective evaluations, the coder was found to meet all tested requirements and objectives set in terms of reference, with a low computational complexity at 10 WMOPS.
Keywords :
audio coding; computational complexity; speech coding; time-domain analysis; vector quantisation; ITU-T G.711 embedded wideband speech coding; ITU-T G.711WBE standardization; MDCT-based higher band enhancement layer; audio coding; computational complexity; noise shaping; time-domain weighted vector quantized narrowband enhancement layer; Audio coding; Codecs; Narrowband; Noise shaping; Qualifications; Speech coding; Standardization; Testing; Time domain analysis; Wideband; ITU-T G.711; Pulse Code Modulation; Wideband Speech Coding;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4518535